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Investigations on a particle filter algorithm for crack identification in beams from vibration measurements
- Source :
- Structural Control and Health Monitoring. 22:1049-1067
- Publication Year :
- 2015
- Publisher :
- Hindawi Limited, 2015.
-
Abstract
- Summary This study focuses on crack identification in beams from vibration measurements using principles of dynamic state estimation. The FEM is used to model the beam with cracked-beam elements that account for the presence of an edge crack under near-tip elasto-plastic conditions. The crack size and its location are treated as the variables that are identified using a particle filter algorithm. A parametric study is first carried out with synthetic measurements to numerically analyze the performance of the algorithm. Subsequently, using measurements acquired from physical experiments involving a cantilever beam subjected to arbitrary excitations, the proposed algorithm is used to identify the size and location of crack-like defects. The proposed method does not require measurements of the undamaged beam, hence, can be used for crack identification in beams for which no earlier measurements are available. Copyright © 2015 John Wiley & Sons, Ltd.
Details
- ISSN :
- 15452255
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Structural Control and Health Monitoring
- Accession number :
- edsair.doi...........fd3bc93ab67f35920643beeb55c854ab
- Full Text :
- https://doi.org/10.1002/stc.1733